Correct

染发

/ rǎn fà / 
Strokes

Definition

to dye one's hair/rinse/tint

Example

As a Verb

dye/colour/tint one's hair; have a tint

1
Nǐ
你
de
的
tóufa
头发
duō
多
cháng
长
shíjiān
时间
rǎn
染
yī
一
cì
次
  
?

How often do you colour/dye your hair?